CN219433610U - Air-separating cold box interlayer air pressure control equipment - Google Patents
Air-separating cold box interlayer air pressure control equipment Download PDFInfo
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- CN219433610U CN219433610U CN202320724384.6U CN202320724384U CN219433610U CN 219433610 U CN219433610 U CN 219433610U CN 202320724384 U CN202320724384 U CN 202320724384U CN 219433610 U CN219433610 U CN 219433610U
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- cold box
- pipeline
- nitrogen
- air
- pressure control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/04945—Details of internal structure; insulation and housing of the cold box
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses air pressure control equipment for an interlayer of an air separation cold box, which comprises a cold box main body, wherein an air inlet is formed in one side of the cold box main body, splicing buckling blocks are fixedly connected to the middle positions of the side surfaces of the cold box main body and a honeycomb duct, a fixed plate is inserted and installed between the splicing buckling blocks, splicing buckling grooves are formed in two sides of the fixed plate, and locking knobs are installed at the edges of the side surfaces of the splicing buckling grooves. This air separation cold box intermediate layer atmospheric pressure control equipment can be through deriving the pipeline and will go out tower nitrogen gas and pass through the compressor and derive to through self-operated control valve regulation atmospheric pressure, then carry out liquefaction through the nitrogen liquefier and handle, use as the nitrogen source, can avoid the waste of tower nitrogen gas, shunt tubes can spiral seal lid spiral dismouting moreover, and conveniently adjust through rotatory piece upset, conveniently clear up and maintenance use the inner wall, and can shunt tubes carries out independent flow detection through the nitrogen flowmeter.
Description
Technical Field
The utility model relates to the technical field of air separation, in particular to air pressure control equipment for an interlayer of an air separation cooling box.
Background
The oxygen-producing rectifying tower is an important device for preparing and separating oxygen, nitrogen and argon by using air as a raw material and adopting a deep freezing rectifying method. The air at normal temperature is subjected to various process procedures such as compression, precooling, purification, expansion refrigeration to obtain low temperature, and the like, the purified air forms saturated steam and saturated liquid in the rectifying tower, and the purpose of oxygen, nitrogen and argon required by the process is achieved by utilizing the fact that the saturated temperatures of various medium components under different pressures are different and continuously transferring mass and heat between the saturated liquid and the saturated steam in the packing and the container in the rectifying tower.
The mass transfer and heat transfer of the various mediums are carried out in the fractionating tower, the working temperature is at the lowest of-196 ℃, in order to ensure the operation, a steel refrigeration box plate framework is arranged outside the aluminum rectifying tower to integrally surround and cover the rectifying tower and the pipeline, cold insulation material pearly-lustre sand is filled between the rectifying tower and the cold box interlayer, the heat conduction with the outside is relatively blocked, the low-temperature operation in the rectifying tower is ensured, because the rectifying tower is operated at the extremely low temperature, the gas density is increased, the pressure is reduced, normal-temperature moist air outside the cold box can be sucked into the cold box interlayer through a sealed manhole gap of the cold box or a welding line of the cold box, the adiabatic performance of the cold insulation material pearly-lustre sand is reduced, the device cooling loss is increased, the hygroscopic pearly-lustre sand forms ice blocks to naturally subside in the cold box, external compression to the pipeline in the cold box, and the safe operation of the device is seriously influenced, so that under the operation and the temporary shutdown state of the device, the micro-positive pressure in the cold box interlayer is an important guarantee for ensuring the safe operation of the rectifying tower.
The utility model provides a can monitor interlayer leakage high-efficient cold insulation's air separation cold box device can judge fast that the air separation cold box is revealed the position to can improve the efficiency of maintenance, reduce the loss that equipment trouble shut down brought, economic benefits is showing, simple structure, but exist not enough, the device need provide the supply of nitrogen source in addition, cause the waste of tower nitrogen gas easily, and the pipeline of injection nitrogen gas can not carry out independent dismouting, inconvenient clearance and maintenance use, use inconvenient, thereby need an air separation cold box interlayer atmospheric pressure control equipment to solve foretell problem.
Disclosure of Invention
The utility model aims to provide air pressure control equipment for an interlayer of an air separation cooling box, which aims to solve the problems that the air separation cooling box device in the background art needs to additionally provide nitrogen source supply, waste of tower nitrogen is easily caused, a pipeline filled with nitrogen cannot be independently disassembled and assembled, cleaning and maintenance are inconvenient, and use is inconvenient.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an empty cold box intermediate layer atmospheric pressure controlgear that divides, includes the cold box main part, the lower part storehouse has been seted up to cold box main part inner wall lower extreme, and the rectifying column is installed to lower part storehouse inner wall, lower part storehouse upper end distributes and has middle part storehouse, and the main cold tower is installed to middle part storehouse inner wall, middle part storehouse upper end distributes and has upper portion storehouse, and upper tower is installed to its upper portion storehouse inner wall, and goes up tower upper end intercommunication and install and derive the pipeline, the intermediate layer has been seted up to cold box main part inner wall, derive the pipeline upper end and install the compressor, and the compressor opposite side installs self-operated governing valve, self-operated governing valve opposite side intercommunication is installed nitrogen liquefier, and nitrogen liquefier opposite side intercommunication is installed the honeycomb duct, auxiliary air duct is installed to honeycomb duct one side upper end intercommunication, and the rotatory piece is installed to honeycomb duct middle intercommunication, the rotatory pipe is installed to the intercommunication between the rotatory piece, and the rotatory pipe one side intercommunication is installed the shunt pipeline, install nitrogen flowmeter, and nitrogen flowmeter one side distributes the governing valve, shunt pipeline one end outer wall is sealed lid to be installed in a spiral seal, and spiral-lock groove is installed to spiral-lock groove and install in the side face of the side is installed to the side of the cold box, the side joint is all fixed knot, the side face is installed to the side joint groove, the side joint is installed to the cold box.
Preferably, the delivery pipeline is connected with the nitrogen liquefier in suction communication through a compressor and a self-operated regulating valve.
Preferably, the diversion pipeline is distributed in parallel on the diversion pipe, the diversion pipeline is respectively matched with the positions of the lower bin, the middle bin and the upper bin, and the nitrogen flowmeter and the regulating valve are respectively distributed in parallel on the diversion pipeline.
Preferably, the split flow pipeline is installed in spiral communication with the interlayer on the air inlet through the spiral sealing cover, and is in overturning connection with the diversion pipe through the rotating block, and is in communication connection with the diversion pipe through the rotating pipe.
Preferably, the honeycomb duct is concatenation fixed mounting through fixed plate and cold box main part, and the fixed plate is locking fixed connection through locking knob in concatenation catching groove one side and concatenation knot piece.
Preferably, the nitrogen liquefier is in insertion and splicing installation with the guiding-out pipeline and the guiding pipe through splicing installation insertion blocks, and the auxiliary air guide pipe is distributed in an L-shaped structure on one side of the guiding pipe.
Compared with the prior art, the utility model has the beneficial effects that: this air separation cold box intermediate layer atmospheric pressure control equipment can be through deriving the pipeline and will go out tower nitrogen gas and pass through the compressor and derive to through self-operated control valve regulation atmospheric pressure, then carry out liquefaction through the nitrogen liquefier and handle, use as the nitrogen source, can avoid the waste of tower nitrogen gas, shunt tubes can spiral seal lid spiral dismouting moreover, and conveniently adjust through rotatory piece upset, conveniently clear up and maintenance use the inner wall, and can shunt tubes carries out independent flow detection through the nitrogen flowmeter.
Drawings
FIG. 1 is a front view of an air pressure control device for an air separation cooling box interlayer;
FIG. 2 is a cross-sectional view of an air pressure control device for an air separation cooling box interlayer according to the present utility model;
FIG. 3 is a schematic diagram showing the connection of a fixing plate of an air pressure control device in an interlayer of an air separation cooling box and a splicing buckling block;
FIG. 4 is an enlarged view of the air pressure control device in FIG. 2A of the interlayer of the air separation cooling box according to the present utility model;
FIG. 5 is an enlarged view of the air pressure control device in FIG. 2B of the interlayer of the air separation cooling box according to the present utility model;
FIG. 6 is an enlarged view of the air pressure control device of the interlayer of the air separation cooling box at the position C in FIG. 2;
FIG. 7 is an enlarged view of the air pressure control device in FIG. 3 in the interlayer of the air separation cooling box according to the present utility model.
In the figure: 1. the cold box comprises a cold box main body, 2, a lead-out pipeline, 3, a compressor, 4, a shunt pipeline, 5, a flow guide pipe, 6, a self-operated regulating valve, 7, an auxiliary air guide pipe, 8, a nitrogen liquefier, 9, a nitrogen flowmeter, 10, a regulating valve, 11, a fixed plate, 12, a rectifying tower, 13, a lower bin, 14, an interlayer, 15, a main cold tower, 16, a middle bin, 17, an upper tower, 18, an upper bin, 19, a spiral sealing cover, 20, an air inlet, 21, a splicing installation insert block, 22, a rotating block, 23, a rotating pipe, 24, a splicing buckle block, 25, a splicing buckle groove, 26 and a locking knob.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-7, the present utility model provides a technical solution: an air separation cold box interlayer air pressure control device comprises a cold box main body 1, a lead-out pipeline 2, a compressor 3, a shunt pipeline 4, a flow guide pipe 5, a self-operated regulating valve 6, an auxiliary air guide pipe 7, a nitrogen liquefier 8, a nitrogen flow meter 9, a regulating valve 10, a fixed plate 11, a rectifying tower 12, a lower bin 13, an interlayer 14, a main cold tower 15, a middle bin 16, an upper tower 17, an upper bin 18, a spiral sealing cover 19, an air inlet 20, a splicing installation insert block 21, a rotating block 22, a rotating pipe 23, a splicing buckle block 24, a splicing buckle groove 25 and a locking knob 26, wherein the lower bin 13 is arranged at the lower end of the inner wall of the cold box main body 1, the rectifying tower 12 is arranged at the inner wall of the lower bin 13, the middle bin 16 is distributed at the upper end of the lower bin 13, the main cold tower 15 is arranged at the inner wall of the middle bin 16, the upper bin 18 is distributed at the upper end of the middle bin 16, the upper tower 17 is arranged at the inner wall of the upper bin 18, and the upper end of the upper tower 17 is communicated with a leading-out pipeline 2, the leading-out pipeline 2 is connected with a nitrogen liquefier 8 in a suction communication way through a compressor 3 and a self-operated regulating valve 6, so that the leading-out pipeline 2 is convenient for leading out the nitrogen of the leading-out tower stably, and the nitrogen source is more stable through the nitrogen liquefier 8, the waste of resources is avoided, an interlayer 14 is arranged on the inner wall of the cold box main body 1, the upper end of the leading-out pipeline 2 is provided with the compressor 3, the other side of the compressor 3 is provided with the self-operated regulating valve 6, the other side of the self-operated regulating valve 6 is communicated with the nitrogen liquefier 8, the other side of the nitrogen liquefier 8 is communicated with a honeycomb duct 5, the honeycomb duct 5 is fixedly connected with the cold box main body 1 in a splicing way through a fixed plate 11, the fixed plate 11 is fixedly connected with a splicing buckling block 24 in a splicing buckling groove 25 side through a locking knob 26, so that the guide pipe 5 can be spliced and fixed through the fixing plate 11, the installation is more stable, the nitrogen liquefier 8 is spliced and installed with the guide pipe 2 and the guide pipe 5 in an inserting way through the splicing and installing plug block 21, the auxiliary air duct 7 is distributed on one side of the guide pipe 5 in an L-shaped structure, so that the nitrogen liquefier 8 is convenient to insert, splice and disassemble, convenient to independently replace and use, nitrogen auxiliary introduction can be carried out through the auxiliary air duct 7, the defect that nitrogen sources cannot be added is avoided, the upper end of one side of the guide pipe 5 is communicated with the auxiliary air duct 7, the middle of the guide pipe 5 is communicated with the rotating block 22, the rotating pipe 23 is communicated between the rotating blocks 22, the split flow pipe 4 is arranged on one side of the rotating pipe 23 in a communicating way, the split flow pipe 4 is distributed in parallel on the guide pipe 5, the split flow pipe 4 is matched with the positions of the lower bin 13, the middle bin 16 and the upper bin 18 respectively, the nitrogen flow meter 9 and the regulating valve 10 are respectively distributed on the shunt pipeline 4 in parallel, so that the shunt pipeline 4 can perform independent flow detection through the nitrogen flow meter 9, the shunt pipeline 4 is in spiral communication with the interlayer 14 on the air inlet 20 through the spiral sealing cover 19, the shunt pipeline 4 is in overturning connection with the flow guide pipe 5 through the rotating block 22, the shunt pipeline 4 is in communication connection with the flow guide pipe 5 through the rotating pipe 23, the shunt pipeline 4 is convenient to disassemble, assemble, overturn and regulate, independent maintenance and cleaning are convenient to use, the nitrogen flow meter 9 is installed on the shunt pipeline 4, the regulating valve 10 is distributed on one side of the nitrogen flow meter 9, the spiral sealing cover 19 is sleeved on one end outer wall of the shunt pipeline 4, one end of the spiral sealing cover 19 is in spiral installation with the air inlet 20, the air inlet 20 is arranged on one side of the cold box main body 1, and the middle positions of the side surfaces of the cold box main body 1 and the flow guide pipe 5 are fixedly connected with splicing buckling blocks 24, a fixed plate 11 is installed between the splicing buckling blocks 24 in an inserting way, splicing buckling grooves 25 are formed in two sides of the fixed plate 11, locking knobs 26 are installed on the side edges of the splicing buckling grooves 25, splicing installation inserting blocks 21 are fixedly connected to the upper end and the lower end of the nitrogen liquefier 8, and air pressure detection equipment is integrated on one side of an interlayer 14 of the lower bin 13, the middle bin 16 and the upper bin 18.
Working principle: when the air separation cold box interlayer air pressure control device is used, firstly, the flow guide pipe 5 of the device is inserted and spliced with the fixed plate 11 through the splicing buckling blocks 24, the splicing buckling grooves 25 and the locking knobs 26, then the flow distribution pipeline 4 is installed in a communicating way with the air inlet 20 through the spiral sealing cover 19, when nitrogen is led out from the upper tower 17, the compressor 3 can be started, the nitrogen is pumped out to one side for flow guide, the air pressure is regulated through the self-operated regulating valve 6, then the nitrogen is led into the nitrogen liquefier 8 for liquefaction, at the moment, the air pressure detection device on the interlayer 14 side of the lower bin 13, the middle bin 16 and the upper bin 18 is used for sampling detection, when the air pressure is abnormal, the nitrogen can be led into the flow guide pipe 5, then the regulating valve 10 is opened, the air flow meter 9 is used for flow real-time observation, the regulating valve 10 can be closed, when the inner wall of the flow distribution pipeline 4 needs to be cleaned, the inner wall of the air distribution pipeline needs to be overturned to one side for liquefaction, and the air pressure can be replaced through the insertion of the middle bin 16 and the air pressure can be replaced when the air pressure is replaced by the cold box, and the air pressure can be replaced when the air pressure is replaced by inserting the middle bin 18.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. The utility model provides an air separation cold box intermediate layer atmospheric pressure control equipment, includes cold box main part (1), lower part storehouse (13) have been seted up to cold box main part (1) inner wall lower extreme, and rectifying column (12) are installed to lower part storehouse (13) inner wall, lower part storehouse (13) upper end distributes and has middle part storehouse (16), and main cold column (15) are installed to middle part storehouse (16) inner wall, middle part storehouse (16) upper end distributes and has upper portion storehouse (18), and tower (17) are installed to its upper portion storehouse (18) inner wall, and go up tower (17) upper end intercommunication and install export pipeline (2), its characterized in that: the utility model discloses a cold box, including cold box main part (1) and air inlet (20), cold box main part (1) is equipped with intermediate layer (14), export pipeline (2) upper end and install compressor (3), and compressor (3) opposite side installs self-operated regulating valve (6), self-operated regulating valve (6) opposite side intercommunication is installed nitrogen liquefier (8), and nitrogen liquefier (8) opposite side intercommunication is installed honeycomb duct (5), auxiliary air duct (7) are installed in honeycomb duct (5) one side upper end intercommunication, and rotary block (22) are installed in honeycomb duct (5) middle intercommunication, the intercommunication is installed rotary pipe (23) between rotary block (22), and rotary pipe (23) one side intercommunication is installed shunt pipeline (4), install nitrogen flowmeter (9) on shunt pipeline (4), and nitrogen flowmeter (9) one side distributes and have governing valve (10), spiral seal lid (19) are installed to shunt pipeline (4) one end outer wall cover, and spiral seal lid (19) one end and air inlet (20) spiral installation, air inlet (20) are seted up in cold box main part (1) one side, and rotary block (22) are installed in honeycomb duct (1) middle intercommunication, and rotary block (24) are installed in middle position and are all fixed splice plate (24) are all installed between fixed splice plate (24), and splice buckling grooves (25) are formed in two sides of the fixing plate (11), locking knobs (26) are arranged on the side edges of the splice buckling grooves (25), and splice installation inserting blocks (21) are fixedly connected to the upper end and the lower end of the nitrogen liquefier (8).
2. The air separation cooling box interlayer air pressure control device according to claim 1, wherein: the guide pipeline (2) is connected with the nitrogen liquefier (8) in suction communication through the compressor (3) and the self-operated regulating valve (6).
3. The air separation cooling box interlayer air pressure control device according to claim 1, wherein: the diversion pipeline (4) is distributed at parallel positions on the diversion pipeline (5), the diversion pipeline (4) is respectively matched with the positions of the lower bin (13), the middle bin (16) and the upper bin (18), and the nitrogen flowmeter (9) and the regulating valve (10) are respectively distributed at parallel positions on the diversion pipeline (4).
4. A space division cold box interlayer air pressure control device according to claim 3, wherein: the diversion pipeline (4) is installed in spiral communication with the interlayer (14) on the air inlet (20) through the spiral sealing cover (19), the diversion pipeline (4) is connected with the diversion pipe (5) in an overturning mode through the rotating block (22), and the diversion pipeline (4) is connected with the diversion pipe (5) in a communicating mode through the rotating pipe (23).
5. The air separation cooling box interlayer air pressure control device according to claim 1, wherein: the honeycomb duct (5) is fixedly installed with the cold box main body (1) in a spliced mode through the fixing plate (11), and the fixing plate (11) is fixedly connected with the splicing buckling blocks (24) in a locked mode on one side of the splicing buckling grooves (25) through the locking knob (26).
6. The air separation cooling box interlayer air pressure control device according to claim 1, wherein: the nitrogen liquefier (8) is in insertion and splicing installation with the guiding-out pipeline (2) and the guiding pipe (5) through the splicing installation insertion block (21), and the auxiliary air guide pipe (7) is distributed in an L-shaped structure on one side of the guiding pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320724384.6U CN219433610U (en) | 2023-04-04 | 2023-04-04 | Air-separating cold box interlayer air pressure control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320724384.6U CN219433610U (en) | 2023-04-04 | 2023-04-04 | Air-separating cold box interlayer air pressure control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219433610U true CN219433610U (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320724384.6U Active CN219433610U (en) | 2023-04-04 | 2023-04-04 | Air-separating cold box interlayer air pressure control equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219433610U (en) |
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2023
- 2023-04-04 CN CN202320724384.6U patent/CN219433610U/en active Active
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